Books about Friendship -- Juvenile fiction (sorted alphabetically)
- Madge Morton's Victory Amy D. V. Chalmers
- Magic Nuts Mrs. Molesworth
- Magic of Oz L. Frank Baum
- Magic of Oz L. Frank Baum
- Maida's little house Inez Haynes Gillmore
- Making the Nine Albertus T. Dudley
- Mammy Tittleback and Her Family: A True Story of Seventeen Cats Helen Hunt Jackson
- Marion Berkley: A Story for Girls Elizabeth B. Comins
- Marjorie Dean, College Junior Josephine Chase
- Marjorie Dean Macy's Hamilton Colony Josephine Chase
- Marjorie Dean, Post-Graduate Josephine Chase
- Marjorie Dean's Romance Josephine Chase
- Marjorie's New Friend Carolyn Wells
- Mark the Match Boy; or, Richard Hunter's Ward Jr. Horatio Alger
- Mark Tidd, Editor Clarence Budington Kelland
- Mark Tidd: His Adventures and Strategies Clarence Budington Kelland
- Mark Tidd in Business Clarence Budington Kelland
- Mark Tidd in the Backwoods Clarence Budington Kelland
- Mark Tidd, Manufacturer Clarence Budington Kelland
- Mark Tidd's Citadel Clarence Budington Kelland
- Martin Rattler R. M. Ballantyne
- Martin Rattler R. M. Ballantyne
- Marvelous Land of Oz L. Frank Baum
- Marvelous Land of Oz L. Frank Baum
- Marvelous Land Of Oz L. Frank Baum